bop inmate telephone system (ITS) allows collect calls that cost 25 cents/min, with no added fees, but only to numbers on the inmate's approved phone list. They also count towards the monthly call limit, 300 minutes/month with an extra 100 in Nov. & Dec. Your phone has to be able to accept collect calls, and AT&T recently announced that they are no longer going to allow collect calls from federal prisons on their system.